[问题分析] 求助：netscreen的地址转换

例如将
在netscreen204上
能否提供相应的配置给各参考 目前配置
set interface "ethernet1" zone
set interface "ethernet2" zone  
set interface "ethernet3" zone
set interface "ethernet4" zone
unset interface vlan1 ip
set interface ethernet2 ip
set interface ethernet2 route 9tAR
set interface ethernet3 ip
set interface ethernet3 route
set interface ethernet4 ip p.u.b.218/29
set interface ethernet4 route &O
unset interface vlan1 bypass-others-ipsec DFB
unset interface vlan1 bypass-non-ip
set interface ethernet1 ip manageable   
set interface ethernet2 ip manageable
set interface ethernet3 ip manageable
set interface ethernet4 ip manageable  
unset interface ethernet3 manage ssh 
set interface ethernet4 manage ping 
set interface ethernet4 dip 4 p.u.b.220 p.u.b..220 s!  
set interface "ethernet4" mip p.u.b.219 host x.x.x.188 netmask 255.255.255.255 
set policy id 91 from "Untrust" to "Trust" "Any" "MIP(p.u.b.219)" "ANY" permit log

目前私网地址还是无法ping通外网的公网地址 不知该如何解决  
有没有高手留下个联系方法，可以直接请教一下